Refrigeration & Air-Conditioning Practice Set-3

May 18, 2021

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1. The freezing point of sulphur dioxide is

2. Rating of a domestic refrigerator is of the order of

3. Highest temperature encountered in refrigeration cycle should be

4. On the pressure-enthalpy diagram, condensation and desuperheating is represented by a horizontal line because the process

5. The value of C.O.P in vapour compression cycle is usually

6. Cooling water is required for following equipment in ammonia absorption plant

7. A certain refrigerating system has a normal operating suction pressure of 10 kg/cm gauge and condensing pressure of about 67 kg/cm. The refrigerant used is

8. The operating pressure for refrigerating units using R-12 as a refrigerant is

9. In a lithium bromide absorption refrigeration system

10. A reversible engine has ideal thermal efficiency of 30%. When it is used as a refrigerating machine with all other conditions unchanged, the coefficient of performance will be


 

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A Demrot is the founder of VideRime Online Learning, a leading engineering website. He did his BE Civil and M.Tech Structure from RGPV University, Bhopal and has been working as an Assistant Professor in a reputed college.

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